FILE: An anaesthetist monitors a patient's heart rate and other data displayed on electronic monitors during an operation inside a theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. As the U.K. government proposes spending 160 million pounds ($207 million) to support medical research and health care we select our best archive images on health. Photographer: Matthew Lloyd/Bloomberg via Getty Images

FILE: Medical staff work in the background as a pressure infusor bag hangs from a medical stand inside an operating theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. As the U.K. government proposes spending 160 million pounds ($207 million) to support medical research and health care we select our best archive images on health. Photographer: Matthew Lloyd/Bloomberg via Getty Images

FILE: A member of the medical staff secures his face mask whilst working inside an operating theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. As the U.K. government proposes spending 160 million pounds ($207 million) to support medical research and health care we select our best archive images on health. Photographer: Matthew Lloyd/Bloomberg via Getty Images

A model of an eye reconstruction sits on a bench inside the Maxillofacial (Max Facs) Prosthetic Department at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

An employee works on the model of an eye reconstruction inside the Maxillofacial (Max Facs) Prosthetic Department at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

An employee works on the model of an eye reconstruction inside the Maxillofacial (Max Facs) Prosthetic Department at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

Models of skeletal facial structures, produced by a 3D printing machine, sit on a bench inside the Maxillofacial (Max Facs) Prosthetic Department at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

Satyesh Parmar, consultant oral and maxillofacial surgeon, holds a plastic plate as he performs a facial reconstruction operation to move part of a patient's hip bone to their face inside a theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

Satyesh Parmar, consultant oral and maxillofacial surgeon, performs a facial reconstruction operation to move part of a patient's hip bone to their face inside a theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

Satyesh Parmar, consultant oral and maxillofacial surgeon, performs a facial reconstruction operation to move part of a patient's hip bone to their face inside a theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

A member of the medical team holds a 3D printed model of the facial reconstruction for reference during an operation inside a theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

A member of the medical team holds a 3D printed model of the facial reconstruction for reference during an operation inside a theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

A member of the medical team prepares equipment during an operation inside theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

Models of prosthetic noses sit on a bench inside the prosthetic department at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

A patient lies on the operating table during his facial reconstruction operation inside theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

Members of the medical team perform a facial reconstruction operation to move part of a patient's hip bone to their face inside a theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

A patient's foot rests on the operating table inside a theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

Members of the medical team perform a facial reconstruction operation to move part of a patient's hip bone to their face inside a theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images

Surgeons, medial staff and observers gather around a patient during an operation inside theater at Queen Elizabeth Hospital Birmingham, part of the University Hospitals Birmingham NHS Foundation Trust, in Birmingham, U.K., on Monday, Feb. 20, 2017. Health care repeatedly appears near the top in surveys of voters' concerns. Photographer: Matthew Lloyd/Bloomberg via Getty Images